Support for mixed null/smi equality: do not deoptimize, emit same optimized code as if that was smi…

runtime/vm/flow_graph_compiler.cc

Index: runtime/vm/flow_graph_compiler.cc
===================================================================
--- runtime/vm/flow_graph_compiler.cc	(revision 13236)
+++ runtime/vm/flow_graph_compiler.cc	(working copy)
@@ -474,7 +474,7 @@
 }
 
 
-void FlowGraphCompiler::GenerateInstanceCall(
+const ICData& FlowGraphCompiler::GenerateInstanceCall(
     intptr_t deopt_id,
     intptr_t token_pos,
     const String& function_name,
@@ -508,6 +508,7 @@
 
   EmitInstanceCall(&target_label, ic_data, arguments_descriptor, argument_count,
                    deopt_id, token_pos, locs);
+  return ic_data;
 }